问题
选择题
It was not until dark ______ he found______ he believed was the correct way to solve the problem.[ ]
A. that, that
B. that, what
C. when, what
D. when, that
答案
答案：B
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It was not until dark ______ he found______ he believed was the correct way to solve the problem.[ ]
A. that, that
B. that, what
C. when, what
D. when, that
答案：B